Adjustable supporting device for movable objects.



G. A. HAWK. ADJUSTABLE SUPPORTING DEVICE FOR MOVABLE OBJECTS.

Patented Nov. 24, 1914.

APPLICATION FILED 00T.14, 1913.

Zuzfnewes UNITED STATES PATENT OFFlCE.

CHARLES A. HAWK, OF KANSAS CITY, MISSOURI.

ADJUSTABLE SUPPORTING DEVICE FOR MOVABLE OBJECTS.

Application filed October 14, 1913.

To all whom it may concern:

Be it known that I, CHARLES A. HAWK, a citizen of the United States ofAmerica, residing at Kansas City, in the county of Jackson and State ofMissouri, have invented certain new and useful Improvements inAdjustable Supporting Devices for Movable Objects; and I do herebydeclare that the following is a full, clear, and exact description ofthe invention, such as will'enable others to make and use the same,reference being had to the accompanying drawings, forming a part of thisspecification.

The objects of the invention are: first: an adjustable base or supportfor movable objects, such as tables and other household furniture,ladders and the like, and'such an adjusted position obtained as will beirrespective of the declensions of the floor or ground; second, toenable the movable object to be angularly adjustable, in a novel,expeditious manner; and third: to afford a combined adjustable legv andbrace, to movable objects.

The invention consists in the novel construction and combination ofparts, such'as will be first fully described and then specificallypointed out in the claims.

In the drawings: Figure 1 is an isometric view of a table, embodying theinvention. Fig. 2is a detail, isometric view of the angularly adjustablesupporting body and base for the table top. Fig. 3 is a longitudinalvertical, sectional, view of one of the table-adjusting members. Fig. 4is a transverse, verticahsectional View taken on the line m-m, on Fig.3. Fig. 5 is an isometric view of a step ladder, showing the inventionapplied thereto; and Fig. 6 is a detail view,

of the rack and support for a cooperating ladder adjustment.

' Similar numerals of reference indicate corresponding parts in all thefigures of the guiding surface 16, which retains movable objects fromleavingthe table top. Beneath Specification of Letters Patent.

Patented Nov. 24, 1am.

Serial No. 795,092.

the side members 14, of the frame 12, are

rectangular clampingbox frames or body 17, of the requisite width andhaving longitudinal, parallel side plates 18, spaced apart the requisitedistance, and end plates 19, the upper edge portions of said sides andends of the box frames being secured fixedly to the lower surface of thesides 1-1, of the frame 12, of the table top, the ends of which boxextend to a point approximately onefourth the distance inwardly, fromthe line of the ends 15, of the box frame 12, of the table top. Thesides 18, of the clamp box frame 17, are made of yielding material, andwithin said sides are inserted the curved or arched plates 20, which areof equal width to the space between the inner surfaces of said sides 18,of the box clamp, the ends ofthe curved plates 20 .passing in con-v tactwith the lower, inner surfaces of the ends 19, of the said box frames 17and to a short distance below the lines of said ends. Throughopening-23, in the side plates 18 of each box, extends a clamping screw24-, upon one end of whichscrew is a head 25, bearing upon the outersurface and one side 18, of the box frame, and upon the other end of thescrew is a clamping nut 26, hearing upon the outer surface of theopposite side plate 18,-of said frame, the screw passing beneath thelower surface of the plate 20, so that said screw acts simply to bindthe sides of plates 20, which maybe adjusted in any degree desired.

30 indicates the adjustable clamping box frames, constituting the baseofthe table, and being the same in width as the. box

frames .17, the adjustable box 30 being shorter in length than the fixedbox frames 17, and approximatelv that of the ends15, of thetable. Theadjustable box frames 30 are placed in. position beneath the said ends15, of the table, and the lower end portions of the respective adjustingplates 20 placed flatwise in position against the outer surfaces of theinner plates 31, which form the sides of the respective adjustable boxframes 30, and secured thereto at points close to the-lines of the outerends 32, of said box frames by the rivets 33.

Within the box frames 30 are combined,

table supportingsuperposed leg and brace curved plates 34,. which are ofthe same width as the plates 20,- the ends of which plates 34 extenddownwardly in contact with the lower, inner surfaces of the. endsmembers of said frames mounted slidingly on the convex surfaces of saidarched plates and clamping devices acting to control the slidingmovement of said parallel box frames upon said plates.

l. An adjustable base for table tops comprising sets of upper and lowerrectangular box frames, the lower set being provided with yielding sidemembers and parallel arched plates upon the upper convex surface ofwhich plates the lower surfaces of the ends of said lower set of the boxframes are slidingly mounted, and clamping screw bolts extending throughsaid yielding side members beneath the lines of the inner concavesurfaces of said plates, the upper set of parallel box frames havingyielding side members extending at right angles to the lower set of boxframes and arched plates supporting the upperbox frames the lower endsof whicharched plates are bent at an angle and connected with the innersurfaces of the side members of the said lower set of box frames.

5 A supporting base for the adjustment of movable objects, comprising ayielding arched plate having feet, and a rectangular box frame havingyielding side members and the lower surfaces of the end members bearingupon the convex surface of the arched plate and clamping means which actto clamp said yielding side members to the outer surface of the saidyielding arched plate.

6. An adjustable body support for movable objects comprising parallelbox frames having yielding side members supporting said body, archedplates within said frames having the end members of said frames bearingupon the convex surfaces of said arched plates, clamping bolts extendingthrough said yielding side members beneath the lines of the concaveinner surfaces of said plates and clamping nuts thereon and yieldingfoot supports for the ends of said arched plates.

CHARLES A. HAWK. Witnesses ROBERT O. MCLVIN, ANNIE F. GREEK.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, .D. G.

